低出生体重是婴儿死亡率的极其重要的影响因素之一.这些婴儿的死亡主要是在富内发育不良之故.这种发育不良可以分为早产、发育迟缓或两者同时存在。死亡的危险性随着出生体重的减少而增加。极低体重婴儿处于高危之中。低出生体重同时也增加了发病的危险性,与神经发育障碍和先天性畸形的发生有明显关系。低出生体重和下呼吸道感染、学习障碍、行为障碍也有关系。此外,低出生体重婴儿的出生和不良后果也会给一个家庭带来感情上和经济上的应激。 Low birth weight is one of the most important determinants of infant mortality, and the fatalities in these infants are predominantly under-developed, which can be classified as prematurity, stunting, or both. The risk of death increases with decreasing birth weight. Very low birth weight infants are at high risk. Low birth weight also increased the risk of onset, and neurodevelopmental disorders and congenital malformations have a significant relationship. Low birth weight and lower respiratory tract infection, learning disabilities, behavioral disorders are also related. In addition, the birth and adverse consequences of low birth weight infants can also bring emotional and financial stress to a family.